1=WEP
2=OPENMODEM
3=DUPLICATEMODEMHANDLE
4=CLOSEMODEM
5=GETSETMODEMCONFIG
6=COMMCONFIGDIALOG
7=GETDEFAULTCOMMCONFIG
8=SETDEFAULTCOMMCONFIG
9=LAUNCHMODEMLIGHT
100=DLLENTRYPOINT
101=UMDMTHK_THUNKDATA16